public async Task Readme(string configFile)
{
// Load configuration
var config = BigtableConfig.Load(configFile);
// Create credentials
var credentials = await BigtableCredentials.UseApplicationDefaultCredentialsAsync();
// Data client
using (var dataClient = new BigDataClient(credentials, config))
{
// Scan myTable
var rows = await dataClient.GetRowsAsync(
tableName : "myTable",
startKey : "abc",
endKey : "def",
rowLimit : 20
);
// Show the user
foreach (var row in rows)
{
// Write key to console
Console.WriteLine("Key: " + row.KeyString);
// Iterate the families which were returned
foreach (var family in row.FieldsByFamily)
{
// Results are organized by family
var familyName = family.Key;
// Iterate the fields in this family
foreach (var field in family.Value)
{
var fieldName = field.Key;
// Iterate the versions of the field
foreach (var cell in field.Value)
{
// Write to console
Console.WriteLine("{0}:{1} = {2}", familyName, cell.ColumnName, cell.StringValue);
}
}
}
}
}
}
public static BigtableConfig GetConfig()
{
try
{
// Notify user
Console.WriteLine("Loading config from: " + Constants.ConfigFileLocation);
// Load config
return(BigtableConfig.Load(Constants.ConfigFileLocation));
}
catch (Exception exception)
{
// Notify user
CommandLine.InformUser("Fatal", "Could not load config file: " + Constants.ConfigFileLocation);
CommandLine.RenderException(exception);
CommandLine.WaitForUserAndThen("exit");
// Giveup
return(null);
}
}
